Filter Review: Subdecay Prometheus

Manufacturer: Subdecay Studios
Model: Prometheus – Resonant Filter
MSRP/Paid: $249/$249
New/Used/Loan: New
Battery: Yes
Power Supply: Yes
Size: 2.5″W x 2″D x 4.5″H (Aprox including Jacks and knobs)
Available from: Dealers

From the maker:

Prometheus – Resonant Filter
The Prometheus is a voltage controlled 12dB filter which can be manipulated by playing dynamics or an internally generated signal.

What’s it do?

The Prometheus is everything you’ve ever wanted in a filter pedal.

• Loads of headroom
• Reasonable size (measures about 3.7×4.7 inches)
• Highpass, Bandpass, and Lowpass filtering with adjustable intensity (resonance)
• Forward and reverse envelope following
• Sample/Hold step filtering based on 3 different wave forms.
• No special power supplies required. Operates with a single 9 volt battery or standard 9 volt adapter.

All that and it has some “hidden features” as well.

• The LFO rate can be adjusted to run much faster than the the step rate. This can be used to create very interesting arpeggiation.
• The Depth knob can push the filter cutoff frequency outside of the audio range. This can be useful to create a slow attack effect.
• The step rate can be turned up high enough for smooth modulation. This can be used to create and autofilter effect, that can sound similar to a phaser or tremolo.
• A fixed filter effect is possible by turning the depth knob down all the way, and using the Frequency knob to set the filter cutoff.

Technical:

• Powered by a 9 volt battery or 9VDC adaptor with a negative center 2.1mm barrel style plug. Current draw is less than 15mA.
• Input impedance: 1M
• Output impedance: Less than 1K in HP and LP mode. About 5K in BP mode.